The opening ceremony of the China-Arab States Expo 2015 is held in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Sept. 10, 2015. The second China-Arab States Expo, a platform to promote ties between China and the Middle East countries, kicked off on Thursday, and will run until Sunday in Yinchuan, capital city of Ningxia. (Xinhua/Wang Peng)